Chrysaphius (Greek: Χρυσάφιος) was a eunuch at the Eastern Roman court, who became the chief minister of Theodosius II (r. 408–450). Effectively the ruler of the empire during his ascendancy, he pursued a policy of appeasement towards the Huns, which cost the empire far more gold than any military campaign, while amassing a vast fortune in bribes himself. He is depicted as a sinister figure in all the ancient accounts and is pilloried by Edward Gibbon.
The Byzantine historians give us a considerable amount of information on Chrysaphius. His real name was Taiouma (Theophanes 151) or Tumna (Cedrenus I 601) or Tzoumas (Patria II 182; George Codinus 47) or even Ztommas (Malalas 363-6). Chrysaphius exercised a considerable influence on Theodosius II at the end of his reign. According to Malalas, Theodosius II loved Chrysaphius for his beauty (Malalas id and 368). He seems to have risen from among the ranks: according to Malalas, he was a mere cubicularius (servant of the imperial bedchamber); according to the Chronicon Paschale, he was a spatharios (p. 390).
In 441 the city prefect in Constantinople was a pagan poet from Panopolis in Egypt named Cyrus, who was exceedingly popular in the city. Thus he incurred the envy of Chrysaphius, who engineered his downfall. Cyrus saved himself by converting to Christianity, but the malice of Chrysaphius was not so easily frustrated, and the eunuch arranged for him to be appointed bishop of Cotyaeum in Phyrgia, where the population had lynched the previous four incumbents. In the event, Cyrus survived and returned to Constantinople in 451 after the death of Chrysaphius.